Missing callback function parameter about jwt HOT 1 CLOSED

Yes, when using the yield keyword, there is no callback. The main point of the callback in traditional JS programming is to access the result of an async function, but when using generators the function returns the result, so your first line would be something like:

var result = yield JWT.verify(token, secret, opts)

Here, the result variable will contain the result of the async function call. This is one of the main benefits of using generators - you get to do async JS programming without callbacks.

from jwt.